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sternocleidomastoid

[ stur-noh-klahy-duh-mas-toid ]

adjective

  1. of, relating to, or involving the sternum, the clavicle, and the mastoid process.


noun

  1. a thick muscle on each side of the neck, the action of which assists in bending the head and neck forward and sideways.
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Word History and Origins

Origin of sternocleidomastoid1

1820–30; sterno- + Greek kleido-, combining form of kleís key, clavicle + mastoid
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Example Sentences

As you glide down, turn your head away from your hand and follow the sternocleidomastoid toward your back.

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Sternosternocostal